diff --git a/SlackNet.Tests/MemberChannelEventTests.cs b/SlackNet.Tests/MemberChannelEventTests.cs
new file mode 100644
index 0000000..355b208
--- /dev/null
+++ b/SlackNet.Tests/MemberChannelEventTests.cs
@@ -0,0 +1,50 @@
+using EasyAssertions;
+using Newtonsoft.Json;
+using NUnit.Framework;
+using SlackNet.Events;
+
+namespace SlackNet.Tests;
+
+public class MemberChannelEventTests
+{
+    private JsonSerializerSettings _sut;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _sut = Default.JsonSettings(Default.SlackTypeResolver(Default.AssembliesContainingSlackTypes)).SerializerSettings;
+    }
+
+    [Test]
+    public void MemberJoinedChannel_HasTeamAndEnterprise()
+    {
+        var result = Deserialize<Event>(@"{ ""type"": ""member_joined_channel"", ""user"": ""W123ABC456"", ""channel"": ""C123ABC456"", ""channel_type"": ""C"", ""team"": ""T123ABC456"", ""inviter"": ""U123456789"", ""enterprise"": ""E123456789"" }");
+
+        var joined = result.ShouldBeA<MemberJoinedChannel>().And;
+        joined.Team.ShouldBe("T123ABC456");
+        joined.Enterprise.ShouldBe("E123456789");
+        joined.ExtraProperties.ShouldBeEmpty();
+    }
+
+    [Test]
+    public void MemberJoinedChannel_WithoutTeamOrEnterprise_HasNeither()
+    {
+        var result = Deserialize<Event>(@"{ ""type"": ""member_joined_channel"", ""user"": ""W123ABC456"", ""channel"": ""C123ABC456"", ""channel_type"": ""C"" }");
+
+        var joined = result.ShouldBeA<MemberJoinedChannel>().And;
+        joined.Team.ShouldBeNull();
+        joined.Enterprise.ShouldBeNull();
+    }
+
+    [Test]
+    public void MemberLeftChannel_HasTeam()
+    {
+        var result = Deserialize<Event>(@"{ ""type"": ""member_left_channel"", ""user"": ""W123ABC456"", ""channel"": ""C123ABC456"", ""channel_type"": ""C"", ""team"": ""T123ABC456"" }");
+
+        var left = result.ShouldBeA<MemberLeftChannel>().And;
+        left.Team.ShouldBe("T123ABC456");
+        left.ExtraProperties.ShouldBeEmpty();
+    }
+
+    private T Deserialize<T>(string json) => JsonConvert.DeserializeObject<T>(json, _sut);
+}
diff --git a/SlackNet/Events/MemberJoinedChannel.cs b/SlackNet/Events/MemberJoinedChannel.cs
index 3f8284c..cece75a 100644
--- a/SlackNet/Events/MemberJoinedChannel.cs
+++ b/SlackNet/Events/MemberJoinedChannel.cs
@@ -9,7 +9,15 @@ public class MemberJoinedChannel : Event
     public string Channel { get; set; }
     public ChannelType ChannelType { get; set; }
     /// <summary>
+    /// Team ID, identifying which workspace the user is from.
+    /// </summary>
+    public string Team { get; set; }
+    /// <summary>
     /// If the user was invited, the user ID of the inviting user.
     /// </summary>
     public string Inviter { get; set; }
+    /// <summary>
+    /// Enterprise ID, identifying which org the user is from. The value will be blank if the user's team is not an Enterprise organization.
+    /// </summary>
+    public string Enterprise { get; set; }
 }
\ No newline at end of file
diff --git a/SlackNet/Events/MemberLeftChannel.cs b/SlackNet/Events/MemberLeftChannel.cs
index 02e3e30..a2d2a0b 100644
--- a/SlackNet/Events/MemberLeftChannel.cs
+++ b/SlackNet/Events/MemberLeftChannel.cs
@@ -8,4 +8,8 @@ public class MemberLeftChannel : Event
     public string User { get; set; }
     public string Channel { get; set; }
     public ChannelType ChannelType { get; set; }
+    /// <summary>
+    /// Team ID, identifying which workspace the user is from.
+    /// </summary>
+    public string Team { get; set; }
 }
\ No newline at end of file